Regulation
PSD2 SCA rules
EU/UK PSD2 requirement that EEA-issued cards used at EEA merchants complete SCA unless an exemption applies; enforced by issuers via 3DS challenges.
Regulation
EU/UK PSD2 requirement that EEA-issued cards used at EEA merchants complete SCA unless an exemption applies; enforced by issuers via 3DS challenges.